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3 years ago

I need help with this am completely lost

Mathematics

1 answer:

cupoosta [38]3 years ago

7 0

Angle DOC is a vertical angle to AOB. Since this is a central angle, arc AB is 50.

Angles AOE, EOD, and DOC are supplementary. 180 - 60 - 50 = 70. Angle AOE is also central, so arc AE is 70.

All arcs combined add to 360, so 360 - 70 - 50 = 240 (we subtracted every other arc besides ECB, which is 240.)

We know angle BOC is vertical to the sum of AOE and EOD, so 60+ 70 = 130. Angle BOC is 130.

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